Was anyone already running Windows 8 able to buy using the upgrade assistant...it should be available in my country but I keep getting the Not available in your region message. probably the issue is that I am already running Windows 8, but want to purchase a legit key.

Was anyone already running Windows 8 able to buy using the upgrade assistant...it should be available in my country but I keep getting the Not available in your region message. probably the issue is that I am already running Windows 8, but want to purchase a legit key.

Also having this issue. Trying to buy another key for my HTPC but I've already got Win 8 Pro on my main machine

Well, good news The old method of installing from upgrade disk as clean install works, same method as for Win7

Change the following registry key before activating:
HKEY_LOCAL_MACHINE/Software/Microsoft/Windows/CurrentVersion/Setup/OOBE
Change "MediaBootInstall" from "1" to "0"
Then type "slmgr /rearm" into a command prompt, wait for conformation prompt.
Restart the PC.
Activate.

Also having this issue. Trying to buy another key for my HTPC but I've already got Win 8 Pro on my main machine

Got it to work, just run the upgrade assistant in Windows XP Service Pack 3 compatibility mode. It will give you your key that way. Was able to activate my installation that was activated using a fake KMS server last August.....and it is a clean install!

It downloaded 64-bit, I was running 64-bit when running the upgrade assistant.

However it downloads just the install files "C:\ESD" (hidden folder) and comparing the original 64-bit disc from TechNet, there is alot of differencies. 64-bit for Technet is 3.33 GB and this is 2.61 GB, this doesn't have install.wim, it has install.esd which is 1.96 GB, install.wim from Technet is 2.68 GB. I guess install.esd has some skus removed.

Just tested and the key works fine when doing a clean install from Technet disc